Vermilion Illinois Climate Data

Monthly Average Climate Data for Vermilion Illinois

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-7.1 °C1.9 °C73.66 mm
February-5.3 °C4.7 °C63.5 mm
March-0.2 °C10.8 °C80.77 mm
April5.6 °C17.8 °C121.41 mm
May11.7 °C23.4 °C114.55 mm
June16.8 °C28.2 °C126.49 mm
July18.2 °C29.6 °C105.92 mm
August17.1 °C29.1 °C78.74 mm
September12.8 °C26.1 °C79.25 mm
October6.4 °C19.3 °C93.98 mm
November0.7 °C11.3 °C89.92 mm
December-4.1 °C4.6 °C71.63 mm
Annual6.1 °C17.2 °C1099.82 mm

Climate Data for Vermilion Illinois

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 1 - May 10
Average Days With Frost100-125 Days
Plant Hardiness Zone - 2023Zone 6a : -23.3°C to -20.6°C
Plant Hardiness Zone - 2012Zone 6a : -23.3°C to -20.6°C
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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